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Finding the Fourth Proportional to 548,509.38, 756,903.87 and 319,102.80

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Solution

The fourth proportional to 548,509.38, 756,903.87 and 319,102.80 is: 440,339.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,509.38 : 756,903.87 = 319,102.80 : x
  2. Step 2: Convert to fraction form
    548,509.38/756,903.87 = 319,102.80/x
  3. Step 3: Cross multiply
    548,509.38x = 756,903.87 × 319,102.80
  4. Step 4: Simplify right side
    548,509.38x = 241,530,144,247.84
  5. Step 5: Solve for x
    x = 241,530,144,247.84/548,509.38
  6. Step 6: Final answer
    x = 440,339.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.